CN100511824C - Component for measurement of cell voltage and temperature in battery pack - Google Patents

Component for measurement of cell voltage and temperature in battery pack Download PDF

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Publication number
CN100511824C
CN100511824C CNB2005800310026A CN200580031002A CN100511824C CN 100511824 C CN100511824 C CN 100511824C CN B2005800310026 A CNB2005800310026 A CN B2005800310026A CN 200580031002 A CN200580031002 A CN 200580031002A CN 100511824 C CN100511824 C CN 100511824C
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China
Prior art keywords
temperature
printed circuit
circuit board
voltage
pcb
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CNB2005800310026A
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CN101053109A (en
Inventor
禹孝相
朴正民
安宰成
郑道阳
南宫檍
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LG Energy Solution Ltd
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LG Chemical Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/21—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having the same nominal voltage
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
    • G01R31/3835—Arrangements for monitoring battery or accumulator variables, e.g. SoC involving only voltage measurements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/505—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising a single busbar
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/545—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/547—Voltage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/549—Current
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02—General constructional details
    • G01R1/04—Housings; Supporting members; Arrangements of terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
    • H01M10/0565—Polymeric materials, e.g. gel-type or solid-type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Secondary Cells (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Battery Mounting, Suspending (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

A member for measurement of cell voltage and temperature in a battery pack comprises temperature measuring elements (a) attached to the surfaces of unit cells, and a printed circuit board (b) having protrusions formed at the upper end thereof such that the protrusions are connected to electrode lead connection members that connect electrode leads of the unit cells, connection parts formed at the lower part thereof for allowing the temperature measuring elements to be attached to the printed circuit board, and a circuit through which electric current for voltage measurement of the unit cells and electric current for temperature measurement of the temperature measuring elements flow.

Description

Be used for measuring the cell voltage of battery pack and the parts of temperature
Technical field
The present invention relates to a kind of be used for the measuring cell voltage of battery pack and the parts of temperature, more particularly, the present invention relates to a kind of parts that are used for measuring cell voltage and temperature in height output, large-capacity battery pack, this battery pack has a plurality of element cells of mutual electrical connection, described voltage and temperature measurement unit are installed on the electrical lead link, this contact conductor link is connected to each other the contact conductor of element cell, is used for the voltage and the temperature of measuring unit battery simultaneously.
Background technology
Recently, the storage battery that can charge and discharge is widely used as the power supply of wireless mobile apparatus.In addition, as the power supply of electric automobile and mixed power electric car, storage battery receives remarkable concern, and developing this automobile is in order to solve such as the air-polluting problem that existing gasoline and diesel-powered car produced of using fossil fuel.
Small type mobile devices is used one or more battery, for example, uses 3 or 4 element cells for each equipment.On the contrary, use the battery pack of the element cell that includes a plurality of mutual electrical connections, because this medium-sized or main equipment needs high output, high capacity cell such as the medium-sized or main equipment of vehicle.
Usually, a plurality of element cells of connecting mutually or being connected in parallel are installed in the battery case, then, make a plurality of this battery cases in parallel mutually, thereby make battery pack.
Fig. 1 illustrates the perspective view that 4 element cells are installed the typical structure of battery case within it.
With reference to figure 1, battery case 100 comprises the framework 102 and 104 of a pair of mutual connection.Framework 102 and 104 is being arranged at element cell 200 on the battery separator 110 of framework 102 and 104 in disconnected from each other, and after framework 102 and 104 is connect mutually, guarantee element cell 200 is fixed on the battery separator 110 of framework 102 and 104.Element cell 200 has contact conductor, the bus 120 on the top by being positioned at this battery case 100, and this contact conductor is electrically connected to the contact conductor of adjacent-cell battery 201.As shown in Figure 1, element cell 200 and 201 is connected in series mutually, but element cell also can be connected in parallel mutually.Each element cell is electrically connected to cathode connection end 130 and the anode connection end 140 that protrudes from the both sides, upper end of battery case 100 respectively.
Be used to measure have two or more pile up mutually and also the battery pack of the battery case 200 that is electrically connected mutually in element cell 200 and 201 voltage and the existing method of temperature comprise step: by lead the auxiliary voltage measuring equipment is installed to the contact conductor link, to measure cell voltage; And with thermocouple be attached to battery surface or battery surface near, and, by lead this thermocouple is connected in external measurement devices, to measure battery temperature.Therefore, this battery pack needs the aerial lug parts, and such as the above-mentioned lead that is used to connect voltage and temperature measurement equipment, therefore, the structure of battery pack is complicated more.Complicated line causes being difficult to the assembled battery group, is the main cause of problem.By printed circuit board (PCB) is set, can simplify this complicated line.
2002-39356 Korean unexamined patent disclosure has been described a kind of example that is used for the printed circuit board (PCB) of high output, large-capacity battery pack, and in this patent disclosure, printed circuit board (PCB) is as the link of element cell.This invention that the disclosure is described provides a kind of this printed circuit board (PCB) has been directly connected to the method for element cell, and this printed circuit board (PCB) comprises: be used for the element cell of installing in it is connected or connected required circuit in parallel; And the special-purpose gang socket of voltage measurement, it is used for being connected with voltage measuring apparatus.
Yet as mentioned above, at this printed circuit board (PCB) during directly as the electric connecting part of element cell, even when the part of this printed circuit board (PCB) is damaged, whole battery group also may be short-circuited.In addition, being connected between printed circuit board (PCB) and the element cell reduced durability.In addition, the problem that disclosed invention exists is, as mentioned above by additional external traverse survey batteries in battery set temperature.
Summary of the invention
Therefore, the present invention relates to a kind of parts of measuring cell voltage and temperature in battery pack, it has overcome the above-mentioned prior art problem and the technical problem of present required solution basically.That is, the purpose of this invention is to provide a kind of printed circuit board (PCB), it can be advantageously connected to the electric connecting part of each element cell in the battery pack, so that measure cell voltage and temperature simultaneously, and need not to be provided with additive wire.
The inventor has carried out various tests and research, and a kind of measurement component newly developed, it can be installed to the additional link (but not electric connecting part of each element cell) of each element cell in the battery pack, can use this measurement component and need not consider that various links come, and it carries out voltage measurement and temperature survey simultaneously, and need not to be provided with additive wire.
According to the present invention, by being provided for measuring the parts of batteries in battery set voltage and temperature, can realize above-mentioned and other purposes, these parts comprise: temperature-measuring element (a) is attached to the surface of element cell; And printed circuit board (PCB) (b), this printed circuit board (PCB) (b) has: the projection of Xing Chenging in the top is used for the contact conductor link that is connected with the contact conductor of element cell so that this projection is connected to; The coupling part that forms in its underpart is used to make temperature-measuring element to be installed in printed circuit board (PCB); And circuit, be used for element cell and carry out the electric current of voltage measurement and be used for temperature-measuring element carrying out thermometric electric current and flowing by it.
Therefore, have temperature-measuring element according to voltage of the present invention and temperature measurement unit and be installed to structure on the printed circuit board (PCB) that forms with given shape.By voltage and temperature measurement unit are installed on the electrode cable link, can realize the installation of voltage and temperature measurement unit easily, so that temperature-measuring element is arranged on the element cell of battery pack.Therefore, according to voltage of the present invention and temperature measurement unit needs aerial lug parts not, for example, the lead that is used for voltage and temperature measurement unit, and when voltage and temperature measurement unit are damaged, can replace impaired voltage and temperature measurement unit with new voltage and temperature measurement unit easily and easily, and battery pack is short-circuited, and can reduce because directly be connected the contact resistance that is produced between voltage and temperature measurement unit and the contact conductor.
Each temperature-measuring element (a) preferably all is thermistors, and its resistance changes according to temperature.
Can be in every way, the projection of printed circuit board (PCB) (b) is fixed in the contact conductor link.Preferably, this projection is fixed in the contact conductor link by welding.Temperature-measuring element (a) can be fixed in printed circuit board (PCB) (b) in every way.Preferably, (each coupling part of b has through hole to printed circuit board (PCB), by this through hole, insert two connecting pins of each temperature-measuring element (a), under the connecting pin of each temperature-measuring element (a) inserts situation in this through hole respectively, by welding, the connecting pin of each temperature-measuring element is fixed in this printed circuit board (PCB).
One end of this printed circuit board (PCB) is provided with connector, and this connector is connected with the battery management system (BMS) that voltage measuring apparatus and temperature measurement equipment have been installed thereon.
Be not particularly limited and be used for the contact conductor link that is connected with the projection of printed circuit board (PCB) (b).This contact conductor link is bus preferably.
Description of drawings
According to the detailed description of doing below in conjunction with accompanying drawing, above-mentioned and other purposes of the present invention, feature and advantage are easier to understand, wherein:
Fig. 1 illustrates the perspective view that 4 element cells are installed battery case within it;
Fig. 2 illustrates the voltage according to the preferred embodiment of the invention that is installed on the bus and the canonical schema of temperature measurement unit; And
Fig. 3 is the perspective view of Fig. 2.
Main description of reference numerals
100: battery box
120,121,122,123: bus
200,201,202,203: element cell
211,212: cathode leg
220,221: the anode connection end
300: voltage and temperature measurement unit
310: thermistor
320: printed circuit board (PCB)
Embodiment
Now, preferred embodiment of the present invention will be described in detail by reference to the drawing.Yet, should be noted that scope of the present invention is not restricted to the embodiments shown.
Fig. 2 illustrates the voltage according to the preferred embodiment of the invention that is installed on bus 121,122 and 123 and the canonical schema of temperature measurement unit 300, and Fig. 3 is the perspective view of Fig. 2.Be installed to voltage on bus 121,122 and 123 and temperature measurement unit 300 secure fixation in battery case framework shown in Figure 1, with the structure battery pack.In order to be expressly understood problem, box framework is not shown among Fig. 2 and 3.
Have contact conductor with reference to figure 2 and 3,4 element cells 200,201,202 and 203, one of corresponding by bus 121,122 and 123, each contact conductor is connected respectively to the contact conductor of adjacent-cell battery.For example, the cathode connection end 211 of element cell 201 is connected to the anode connection end 220 of element cell 200, and anode connection end 221 is connected to the cathode connection end 212 of element cell 202 by bus 122.
Element cell 200,201,202 and 203 is the batteries that can charge and discharge.Various batteries can be used as this element cell.Rectangular cell or cassette battery (pouch-shaped cell) with high density accumulation electric weight are preferably used as this element cell.Cassette battery is more preferably as this element cell.
Each element cell has respectively with sealing means and is contained in negative electrode, anode, diffusion barrier and electrolyte in the battery case.The battery component that comprises the minimum porous diffusion barrier between diaphragm type negative electrode and anode can be to twine ground, and perhaps the full battery (fullcell) of negative electrode/diffusion barrier/this structure of anode or double cell (bicell) can sequentially pile up each other.Do not limit the active material that is used for negative electrode and anode especially.Preferably, active material of cathode is made up of the lithium manganese-base oxide with high security, and active material of positive electrode is made up of carbon.Most preferred element cell is lithium ion battery or lithium ion integrated battery.
Again with reference to figure 2 and 3, measurement component 300 according to the present invention comprises: thermistor 310, as temperature-measuring element; And printed circuit board (PCB) 320.
Each thermistor 310 comprises respectively: sensing body 312 is attached to the storage battery 201 that will measure; And a pair of connecting pin 314, it extends from this sensing body 312.Connecting pin 314 is made by thin lead.Sensing body 312 is attached to the surface of storage battery 201, and connecting pin 314 is connected to printed circuit board (PCB) 320.Apply electric current via 314 pairs of sensing bodies 312 of connecting pin, the resistance of this sensing body 312 changes according to temperature, and this electric current that changes according to resistance is transferred to printed circuit board (PCB) 320 as the signal of telecommunication.
Printed circuit board (PCB) 320 is made by scale copper.This printed circuit board (PCB) has a plurality of formation projection 322 in the top, so that each projection 322 is connected respectively to bus 121,122 and 123.Be fixed on bus 121,122 and 123 by welding the projection 322 that to conduct electricity, arrive projection 322 with the current delivery that will flow through bus 121,122 and 123.In the bottom of printed circuit board (PCB) 320, form a plurality of through holes 324, the connecting pin 314 of thermistor 310 can insert this through hole.In by of connecting pin 314 insertions of this through hole 324, connecting pin 314 is fixed on the printed circuit board (PCB) 320 by welding with thermistor 310.
At this printed circuit board (PCB) printed circuit 326, by projection 322, electric current transfers to this circuit 326 from bus 120, and by through hole 324, electric current transfers to this circuit 326 from thermistor 310.
At an end mounted connector 328 of the printed circuit board (PCB) 320 that links to each other with circuit 326, this connector 328 connects battery management system (BMS) (not shown), on this battery management system, voltage measuring apparatus and temperature measurement equipment is installed.
Although for the example purpose discloses the preferred embodiments of the present invention, those skilled in the art understand, under the situation that does not break away from the disclosed the spirit and scope of the present invention of claims, can carry out various modifications, additional and replacement.
Commercial Application
Can find out from top description, according to cell voltage of the present invention and temperature measurement unit Can be advantageously connected to the contact conductor attaching parts, these contact conductor attaching parts connected with For the contact conductor of the continuous element cell of the battery case that consists of battery pack, to measure the battery electricity Press. In addition, the additional external lead need not be set, and by being directly connected to printed circuit board (PCB) Temperature-measuring element can accurately be measured battery temperature. When printed circuit board (PCB) is damaged, damage Printed circuit board (PCB) do not affect the contact conductor attaching parts. Therefore, can replace easily this seal Printed circuit board, and battery pack is short-circuited.

Claims (5)

1. parts of in battery pack, measuring cell voltage and temperature, these parts comprise:
Temperature-measuring element, it is attached to the surface of element cell; And
Printed circuit board (PCB), it has: the projection of Xing Chenging in the top, be used for the contact conductor link that is connected with the contact conductor of element cell so that this projection is connected to, described contact conductor link is the bus that is connected with the contact conductor of element cell; The coupling part that forms in its underpart is used to make temperature-measuring element to be installed to this printed circuit board (PCB); And circuit, be used for element cell and carry out the electric current of voltage measurement and be used for temperature-measuring element carrying out thermometric electric current and flowing by it,
Wherein voltage and temperature measurement unit are realized to the bus that is attached to battery pack by the projection with voltage and temperature measurement unit that adheres to of battery pack, so that temperature-measuring element is arranged on the element cell of battery pack.
2. parts according to claim 1, wherein each temperature-measuring element all is thermistors, its resistance changes according to temperature.
3. parts according to claim 1 wherein by welding, are fixed in the contact conductor link with this projection.
4. parts according to claim 1, wherein each coupling part has through hole respectively, by this through hole, insert two connecting pins of each temperature-measuring element, under the connecting pin of each temperature-measuring element inserts situation in this through hole respectively, by welding, the connecting pin of each temperature-measuring element is individually fixed in printed circuit board (PCB).
5. parts according to claim 1, wherein an end of this printed circuit board (PCB) has connector, and this connector is connected with the battery management system that voltage measuring apparatus and temperature measurement equipment have been installed thereon.
CNB2005800310026A 2004-11-02 2005-10-17 Component for measurement of cell voltage and temperature in battery pack Active CN100511824C (en)

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JP4937915B2 (en) 2012-05-23
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ATE548776T1 (en) 2012-03-15
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TW200631213A (en) 2006-09-01
BRPI0514362B8 (en) 2023-01-10

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